minot



(No Model.) Sheets-Sheet 1.

No. 253,879. 'Patented Feb. 21, 1882.

N. PETERS. PhnwLilhugmpher. washington, n4 C,

(Ne Medel.) 2 sheets-,sheet 2.

A. W. MINOT 8v M. RHOADES.

GHURN.

Ne. 253,879. Patented Feb. 21,1882.

News'. Phexeuahegmpner, weemngm. D. c

UNITED STATES- ALONZO W. MIN OT AND yMARTIN RHOADES,'OF ROCKFORD, ILL., ASSIGNORS PATENT OFricE.

TO HENRY H; PALMER AND GEORGE E. KING, OF SAME PLACE.

LCHURN.

SPECIFICATION forming part` of.Letters Patent No. 253,879, dated February 21, 1882.

Application filed October 7, 188i.

ToV all whom it may concern Be it known that we,A1.oNZo W. MINo'r and MARTIN RHOADES, citizens ofthe United States, residing in the city of Rockford, in the county of Winnebago and State of Illinois, have invented a new and useful Improvement in Churns, of which the following is a specification.

Our invention relates to that class of churns known as end-over-end revolving churns.7 It however relates more particularly to the ring-head and removable lid employed in this class of churns.

The object of this invention is to improve the removable lids to render them more efficient in their connection with the ring-head. To this end we have devised and constructed the ring-head and removable lid represented in the accompanying drawings, in which- Figure lis a plan view of a ring-head and removable lid embodying our invention, of which Fig. 2 is a central section cut on a plane passinglengthwi se centrally through the radial endwise-sliding bolts. Fig. 3 is a plan view of the ring-headand removable lid with the spi; rally-grooved cam and radially-sliding bolts omitted. Fig. 4 is an under face view of the spirally-grooved cam, and Fig. 5 is an isometrical representation of one of the radial sliding bolts.

In the figures, A represents a metallic ringhead, having its outer edge, a, reduced to proper form to enter a groove or croze formed in the inner side of the end portion of a barrelformed vessel, to be held therein by means of hoops, in the usual manner. This annular ringhead, on its inner edge, is formed with an uprising rim or bead, b, designed to receive a suitable packing of a removable lid.

At c are represented ears,which rise in a vertical position from the outer surface of the annular ring-head, and are produced in pairs at proper intervals. Each pair of these vertical earsis provided with a roller, d, placed be tween their upper or outer end portions, sup ported to revolve on a transverse pin or shaft, e, passed transversely through the ears and through the axial center of the rollers in such a manner that the rollers will revolve on their central support. l

At C is represented a metallic annular ring a suitable bolt.

(No model.)

of angle-iron form in section, consisting of a horizontal liange, h, and avertical rim oriiange, t', the diameter of which is such as to overreach the uprising rim or bead b of the annular ringhead.- The horizontal or disk portion h of this tions-with uprising guide-ears "Z, perforated to receive suitable endwise-nio'ving bolts to slide therein freely.

At D is represented a lid-in this instance of wood in disk formof suitable diameter to be received within the vertical liange t' of the annular ring C snugly, and is fixed in place by means of suitable screws or rivets inserted through the perforated inward projections, k, and int-o or through the wood disk. The under outer edge portion of this disk-lid is rabbeted, as represented at m, in which grooveis in serted a suitable annular packing-rin g, n-in this instance uladefrom cork-which, when the lid is in place on the ring-head, will engage the uprising bead b on the inner edge of the ringhead.

At E is represen tedametallic spider, consisting of the annular ring 0, having the crossarms o connecting its inner edges. The outer edge of the annular rim of this spider is formed withan uprising rim, o, in nearly quarter-sections,leaving an open space, 0', betweentheir ends opposite theends of the radial cross-arms of proper width to receive the radial endwisesliding bolts, and, in connection with-the uprising perforated ears l, serve as guides to give direction to the radial endwise-slidin g bolts. The radial cross-arms of this spider on one side of their outer end portions are provided with a flange, o4, which rises above the plane ofthe arm and receives the sidewise pressure of the bolts produced by the action of the spirallygrooved operating-cam. This spider is provided with a central tubular hub, o5, rising from its outer surface, and adapted to receive This spider is centrally fixed to the outside of the wood disk-headby means of screws in such position that its radial arms will be in line radially with the perforated uprising guide-eais Z.

At F are represented the radial endwise-slid- ICO ing bolts, which are of bar form, rectangular in section, adapted to enter and slide'endwise in the guideears Z. The inner end portion of these bolts, as at p, is reduced in thickness, and is of a proper width to enter the openings o' in the uprising outer rim of the spider. The extreme inner ends of these bolts are provided vvith an uprising stud-arm, p', adapted to enter a spiral groove in an operating-cam. The outer end portions of these bolts are beveled on their upper sides, as at p", in an in elined Wedge form to enter between the vertical ears c of the annular ring-head, and under the rollers d, journaled therein.

At H is represented a disk havin ga diameter about equal to the diameter of the spider E, and is provided with a spiral thread, s, rising from its under side and extending from near its center i'n parallel spiral lines to near its pe riphery, forming a spiral groove, s', which receives the uprising studs p on the inner end of the bolts. This spirally-grooved disk is provided with acentral opening to receive the tubu .lar .hub o5 of the spider in such a manner that the spiral thread s will be Within the outer rim, o, ot' the spider, and the 'spiral groove s', formed b v the spiral thread, will receive the studs p'.

At t is represented a screnhbolt, which is passed upward through the wood disk of the lid, through the tubular hub of the spider, and through awaslier,t, to receive a screw-nut, t, by means of which the parts are firmly clamped to each other and in such a manner as to hold the spirally-grooved cam in position to revolve on the tubular hub of the spider.

At u are represented lever arms or handles, rising and extending outward from the outer upper angle of the spirally-grooved disk, by means of which the disk may be rotated.

From the foregoingit will be seen that with the removable lid placed on the annular ringhead in such position that the out-er ends of the radially-sliding bolts will be opposite the rollers in the ears rising from its outer surface a rotary movement of the spirally-grooved oam disk toward the right hand will cause thepbolts to move outward and their outer Wed ge-formed ends to pass under the rollers, which action will force the annular paekingmingagainstthe uprising rim or bead on the inner edge of the au nular rin g-head, operatin g to produce a tightitting lid7 and the turning of the oam-dislr to ward the left hand will operate to retract the bolts and permit the removal of the lid.

By the employment of the rollers in the uprising ears of the annular ring-head to receive the rvedging,` ends of the bolts we greatly reduce the friction of the parts and produce a better result with a less expen diture of power, and prevent the cutting action or severe Wearing of the parts.

We claim as our inventionl. The combination, with an annular ringhead, of anti-friction rollers supported to revolve on bearings above the surface ofthe annular ring-head, substantially as and for the purpose hereinbelore set forth.

2. The Combination, with an annular ringhead provided with anti-friction rollers mounted to revolve on bearings above the surface of the annular ring, of a removable lid provided With radially-moving bolts to engage the antifriction rollers, substantially1 as and for the purpose hereinbefore set forth.

3. The combination, with an annular ringhead provided with anti-friction rollers mounted to revolve on bearings above the surface of the annular ring, of a removable lid provided with radially-moving bolts, operated by a spi- 8o rally-groovcd rotary cam, substantially as and for the purpose hereinbefore set forth.

ALONZO vv. MINo'r. MARTIN uHoADEs. 

